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本文利用非稳定准三维水流——一维沉降耦合数学模型,采用有限元数值解,以上海行政区为计算区域,对1981—1992年地下水采灌量、水位及土层变形量等实测资料进行数值模拟,利用1993—1998年实测资料对模型进行检验,表明所确定的数学模型是合理可信的。利用该模型计算了地下水可开采量及地下水流场和地面沉降的预报。
In this paper, using the unsteady quasi-three-dimensional water flow-one-dimensional sedimentation coupled mathematical model, using the finite element numerical solution, the Shanghai administrative region as the calculation area, 1981-1992 groundwater irrigation quantity, water level and soil deformation data measured values Simulation, using the measured data from 1993 to 1998 to test the model, shows that the mathematical model is reasonable and credible. The model was used to calculate the groundwater recoverable amount and groundwater flow field and land subsidence forecast.